Batt slitter



April G. H. GEBHARDT ET AL 1,854,131

BATT SLITTER Filed March 20. 1928 4 Sheets-Sheet p i 12, 1932- G. H. GEBHARDT ET AL 1,854,131

BATT SLITTER Filed March 20, 1928 4 Sheets-Sheet 2 27606 rzzrci April 1932- G. H. GEBHARDT ET AL 1,854,131

BATT SLITTER Filed March 20, 1928 4 Sheets-Sheet 3 April 12 1932. G. H. GEBHARDT ET Al. 1,854,131

BATT SLITTER Filed March 20, 1928 4 Sheets-Sheet 4 Patented Apr. 12, 1932 UNITE STATES PATENT ,rri

GUSTAV H. GEBHARDT, OF PHILADELPHIA, AND WILLIAM F. ZBOKTIli-I, 0F JENKINTOWN,

PENNSYLVANIA, ASSIGNORS T0 PROC'IOB. & SCHWARTZ, INCORPORATED, 0F PHILA- DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA BATT SLITT'ER Application filed March 20, '1928. Serial No. 263,162.

One object of our invention is to provide means for slitting batts as they come from a camel-back apron and through a compressor roll or from any other batt forming machine.

A further object of the invention is to provide means for adjusting the circular knives upon the shaft and the knife and cutter plates, so that the batt can be cut in different widths, as desired.

The invention also relates to certain details of construction of the cutter plates and the table for supporting said plates.

In the accompanying drawings:

Figure 1 is a longitudinal sectional view of a batt slitter illustrating our invent-ion, the section being on line 1-1 of Fig. 2;

Fig. 2 is a transverse sectional view on the line 2-2, Fig. 1;

Fig. 3 is a sectional view showing the relation of a cutter plate to a slitting knife;

Fig. 4 is a sectional view of one of the slitter knives, showing means by which it is secured to the shaft;

Fig. 5 is a detached perspective view of one of the knife tables;

Fig. 6 is a detached perspective view of one of the cutter plates;

Fig. 7 is a plan view of one of the cutter plates; v

Fig. 8 is a side view of a cutter plate;

Fig. 9 is an end view of a cutter plate;

. Fig. 10 is a sectional perspective view of a portion of a side frame and the knife table supporting bar;

Fig. 11 is a sectional view on the line 1111, Fig.3;

Fig. 12 is a view similar to Fig. 3, showing the knife-carrying frame raised clear of the table;

Fig. 13 is a perspective view showing the slitter knives in the cutting position; and

Fig. 14 is a view showing the slitter knives raised clear of the cutter plates.

Referring to the drawings, 1 is one end of a camel-back apron which feeds the cotton batt to the stand 2 of compression rolls. These rolls are of the ordinary type.

3 is a slitter to which my invention relates.

4 is the winding head which receives the strips of batts after they are severed by the cutters. This winding head may be of any type desired. 5 are the circular slitting knives which are made as shown in Figs. 3 and 4. Each knife is mounted in a chuck 6 consisting of r two parts 7 and 8, the part 7 having a shouldered projection 9 which extends through the central opening in the slitter knife and into a recess in the part 8. The two parts are clamped together by screws 10 which also clamp the blade to the chuck.

Each chuck 6 is adjustably mounted on a shaft 11 and held. in position by a set screw 12 or other fastening.

There are series of these knives and they can be spaced any distance apart, depending on-the width of batt strip desired.

The shaft 11 is mounted in suitable bearings 12 on a frame 42. This frame is pivotally mounted in the side frames 13.

In the present instance, the frame 42 has a trunnion 43 at each end which is adapted to a bearing 44 in the frame 13. The pivoted frame rests against an adjusting screw 55 when it is in its active position, and can be locked in position by a set screw 56. When the frame 42 is raised, as in Fig. 12, it is held in this position by pins 45.

The frame 42 has a main transverse'member 46 which extends from one side of the machine to the other, while side brackets 4'? of the frame are adjustably mounted on the member 46. These brackets carry the bear ings 12 in the present instance.

A central bracket 14 is also adjustably mounted on the member 46 and carries the bearing for the center of the shaft. By this means, the shaft 11 and its blades 5 can be moved into position as shown in Figs. 1 and 13, or they can be swung out of the active osition as shown in Figs. 12 and 14.

On the shaft 11 is a pulley 16 over which passes a belt from a pulley 17 on the shaft of a motor 18 mounted on a bracket secured to one of the side frames 13. Other means for drivingthe shaft may be used if desired.

19 is a bar extending from one side frame 13 to the other side frame and this bar is adjustably mounted on the frames to allow it to be raised or lowered on the frames as clearly shown in Fig. 10.

In the present instance the frame is slotted at 20, and extending through the slots are bolts 21 which clamp the bar 19 in the position in which it is adjusted.

On the bar are series of shoes 22 which are secured to the bar by bolts 23, and on each shoe 22 is a bracket 24. The brackets are slotted and extending through the slots are bolts 24a. By this construction the brackets can be adjusted vertically on the shoe independent of the bar 19, and the shoes can be adjusted longitudinally on the bar.

Pivotally mounted on each bracket is a knife table 25 shown in detail in Fig. 5.

A bolt 26 acts as a pivot and also as a clamp for retaining the knife table in any position desired in respect to its slitter knife.

The knife table is slotted at 27 so as to clear the slitter knife and has slots 28 at each side of the center slot 27 through which extend the bolts 29 which secure the cutter plate 30 to the lmife table. The table is recessed on its under side at the slots 28 to allow the nuts on the bolts 29 to be flush with the under side of the table.

The cutter plates are made as shown in detail in Figs. 6 to 9, inclusive, and each cutter plate has an inclined portion 31 slightly curved at its outer end 32. With this arrangement, the active portion of the cutter plate is some distance away from the knife table.

In the portion 31 of the cutter plate is a tapered slot 33 made as shown in drawings and this slot acts in conjunction with the slit ter knife to slit the batt, the batt being supported on each side by the beveled surface of the cutter plate.

At the front of the lniife table is an adjustable guide table 34 made as shown in Fig. 1.

Secured to the under side of the table is a slotted support 35 adjustably mounted in a bracket 36 at each side of the frame, and this bracket has a lateral extension 36a through which a bolt 37 extends the bolt passing through the slot 38 in the frame 13.

At the rear of the cutters is another guide table 39 which has a slotted support 40 adapted to a bracket 41 which is an integral part of the bracket 36.

The two tables 34 and 39 are spaced apart to allow the independent knife tables to be adjusted longitudinally on the bar 19.

While we have shown the particular meth od of securing the circular knives to the shafts, other means may be employed without departing from the essential features of the invention.

The operation is as follows:

The batt, as it comes from the camel-back or other batt-forming machine, passes between the compression rolls and is fed over the guide table 34 and over the cutter plates on the knife tables and as the batt is fed forward the cutters 5 sever the batt so as to form a series of strips which may be of any width. desired. The sections are then preferably wound upon the roller 48 of the winding head 49, and as the roll increases in diameter, the roller 48 travels up into the slots 50 of the extensions 51, and when the roll is fully wound the latch 52 is released and the guard 53 turned down so as to allow the roll to be removed, or the several strips of the batt can be carried over the roll 54 and delivered to any point desired.

In some instances, this machine may be used for trimming the batt, in which case only two slitter knives would be used, one mounted at each end of the shaft 11, while two knife tables and cutter plates would also be used, the latter being adjusted in line:

with the slitter knives.

When it is desired to allow the batt to pass through the slitter without cutting, then the frame 42 is turned on its pivots and locked by the pins 45, as shown in Fig. 12.

l/Ve claim:

1. The combination in a batt slitter, of a shaft; a series of rotary knives on the shaft; a separate knife table for and in alignment with each slittin knife and disposed in a" plane substantially tangent to the outer edge of the rotary knife; a cutter plate carried by each table and having a portion projecting at an angle to the plane of the table and inwardly beyond the said edge of the knife; and means for supporting the tables.

2. The combination in a batt slitter, of a shaft; a series of rotary slitting knives adjustably mounted on the shaft; a bar; a series of brackets adjust-ably mounted on the bar; an adjustable knife table mounted on each bracket; and a cutter plate mounted on the knife table in alignment with the rotary knives.

3. The combination of a shaft; means for driving the shaft; a series of slitting knives adjustably mounted on the shaft; a main frame; a bar adjustably mounted on the main frame; a series of brackets adj ustahly mounted on the bar; a knife table mounted on each bracket; and a cutter plate carried on each table and arranged in alignment with the slitter knives.

4. The combination of a main frame; a knife-carrying frame having bearings and pivotally mounted on the main frame; a driven shaft mounted in the bearings; a series of rotary slitter knives adjustably mounted on the shaft; a bar extended from one side of the frame to the other and adjustably mounted thereon; a series of shoes mounted on the bar and adjustable longitudinally thereon; a bracket carried by each shoe, each of said brackets being vertically adjustable on its shoe; and a knife table pivotally mounted on each bracket, each of said knife tables having a cutter plate arranged to align with the respective slitter knives.

5. The combination with a rotary shaft, of a series of slitter knives on the shaft; a main frame; a bar adj ustably mounted on the main frame; knife tables carried by the bar, having cutter plates aligning with the slitter knives; a guide table in front of the knives and a guide table at the rear thereof, said guide tables being adjustably mounted and spaced apart to allow the supporting means for the knife tables to extend therebetween.

6. The combination of a main frame; a knife-carrying frame pivotally mounted thereon; a shaft mounted in bearings on said pivoted frame; means for rotating said shaft; rotary slitter knives adjustably mounted on the shaft; a bar extending from one side frame to the other and vertically adjustable thereon; shoes on the bar; brackets adjustably mounted on the shoes; tables pivotally mounted on the brackets and having cutter plates aligning with the slitter knives; guide plates; and a bracket at each side of the machine upon which the guide plates are adjustably mounted, said brackets being adjustably mounted on the side frames.

7. The combination, in a batt slitting machine, of a shaft, a circular slitter knife carried by the shaft, a guide table disposed in a plane substantially tangent to the peripheral. edge of said knife, and a cutter plate aligned with the knife and located immediately above said guide table.

8. The combination, in a batt slitting machine, of a shaft, a circular slitter knife carried by the shaft, a guide table disposed in a plane substantially tangent to the peripheral edge of said knife, a cutter plate aligned with the knife and located immediately above said guide table, and a knife table interposed between the guide table and the cutter plate for supporting the cutter plate independent of the guide table.

9. The combination, in a batt slitting machine, of a shaft, a circular slitter knife car ried by the shaft, a guide table disposed in a plane substantially tangent to the peripheral edge of said knife, acutter plate aligned with the knife and located immediately above said guide table, a knife table interposed between the guide table and the cutter plate for supporting the cutter plate independent of the guide table, a support for said knife table located below said guide table, and means connecting said support with said knife table extending through a slot formed in said guide table.

10. The combination, in a batt slitting machine, of a shaft, a circular slitter knife carried by the shaft, a guide table disposed in a plane substantially tangent to the peripheral edge of said knife, a cutter plate aligned with the knife and located immediately above said guide table, a knife table interposed between the guide table and the cutter plate for supporting the cutter plate independent of the guide table, a support for said knife table located below said guide table, means connecting said support with said knife table extending through a slot formed in said guide table, and means for adjusting the knife table and the cutter plate carried thereby relative to said support an said guide table.

11. The combination, in a batt slitting machine, of a shaft, a circular slitter knife carried by the shaft, a guide table disposed in a plane substantially tangent to the peripheral edge of said knife, a cutter plate aligned with the knife and located immediately above said guide table, a knife table interposed between the guide table and the cutter plate for supporting the cutter plate independent of the guide table, a support for said knife table located below said guide table, means connecting said support with said knife table extending through a slot formed in said guide table, means for adjusting the knife table and the cutter plate carried thereby relative to said support and said guide table, and means for adjusting the guide table relative to and independent of the knife table.

12. The combination, in a machine for slitting batts, of a rotary slitter knife, a guide table for the batt disposed in a plane substantially tangent to the circular path of movement of the outer edge of the knife, and a cutter plate disposed closely adjacent the guide table and provided with an inclined portion extending at an angle relative to the plane of the table and projecting inwardly beyond the circular path of movement of the outer edge of the knife.

GUSTAV H. GEBHARDT.

WILLIAM F. BOKUM. 

